<!--  -->
<template>
    <div class="todo-footer" v-show="total">
        <label>
            <input type="checkbox" v-model="isAll" />
        </label>
        <span>
            <span>已完成{{ checkTotal }}</span> / 全部{{ total }}
        </span>
        <button class="btn btn-danger" @click="delAll">清除已完成任务</button>
    </div>
</template>

<script>
export default {
    name: "MyFooter",
    data() {
        return {};
    },
    props: ["todoList", "checkAll", "delAllTodo"],
    computed: {
        total() {
            return this.todoList.length;
        },
        checkTotal() {
            return this.todoList.reduce((pre, cur) => {
                return pre + (cur.done ? 1 : 0);
            }, 0);
        },
        isAll: {
            get() {
                return this.total === this.checkTotal;
            },
            set(value) {
                this.checkAll(value);
            },
        },
    },
    methods: {
        delAll() {
            this.$confirm("请确认是否已完成事项, 是否继续?", "提示", {
                confirmButtonText: "确定",
                cancelButtonText: "取消",
                type: "warning",
            })
                .then(() => {
                    this.delAllTodo();
                    this.$message({
                        type: "success",
                        message: "删除成功!",
                    });
                })
                .catch(() => {
                    this.$message({
                        type: "info",
                        message: "已取消删除",
                    });
                });
        },
    },
};
</script>

<style  scoped>
/*footer*/
.todo-footer {
    height: 40px;
    line-height: 40px;
    padding-left: 6px;
    margin-top: 5px;
}

.todo-footer label {
    display: inline-block;
    margin-right: 20px;
    cursor: pointer;
}

.todo-footer label input {
    position: relative;
    top: -1px;
    vertical-align: middle;
    margin-right: 5px;
}

.todo-footer button {
    float: right;
    margin-top: 5px;
}
</style>
